How to choose an electric heat gun (220V)? Rating. Choosing an electric heat gun for home and garage Do I need current for a diesel heat gun

A heat gun is one of the fastest and most powerful types of space heating. To select the desired design of the heat gun, we will conduct a brief analysis.

What is a heat gun

In our climatic conditions, even with enhanced room insulation, using modern finishing heaters, using heat-insulating plaster, one cannot do without heating.

A heat gun, like conventional heaters, consists of a heating element, a housing and a fan. Since such equipment can set a comfortable temperature in the premises in a matter of minutes, a very powerful fan is used in heat guns.

The fan forces air to pass through the heating element, thereby creating a powerful heat flow.

Heat guns are mobile, which allows you to move them from one place to another.

Outwardly, this unit resembles a cannon, has a cylindrical body, is located horizontally or at a slight angle upwards.

Very often, we can say mostly, heat guns are used on a construction site or an industrial facility.

How to correctly calculate the required thermal power of the gun

Before purchasing this unit, it is necessary to know the dimensions and volumes of the room in which the heat gun will operate, whether people will be constantly there.

It is necessary to decide which type of fuel the consumer will use - electricity, gas or diesel.

Any good seller will ask leading questions before offering a model.

For example: the volume of the room, depending on this volume, the required performance of the gun is selected. With an average ceiling height of 3 meters, one kilowatt of heat output is enough to heat approximately 8 to 12 cubic meters. The larger the room, the more powerful the equipment must be.

There are formulas by which you can independently calculate the required thermal power.

Thermal power (kcal/hour) is equal to Vx^TxK. V - the volume of the heated room, i.e. product of width by length and height (cubic meters);

^T - the difference between the outdoor air temperatures and the required indoor temperature, in degrees Celsius;

K - dissipation factor, depends on the type of construction and insulation of the room.

A simplified wooden structure or a corrugated metal sheet structure without thermal insulation has a coefficient of 3 to 4;

a simplified building structure made of single brickwork with a simplified design of windows and a roof, with little thermal insulation, has a coefficient from 2 to 2.9;

standard construction with double brickwork, few windows, standard roof, medium thermal insulation, has a coefficient of 1 to 1.9;

improved construction, double insulated brick walls, limited number of double glazed windows, thick subfloor, roof made of high quality thermal insulation material, high thermal insulation coefficient from 0.6 to 0.9.

One kilowatt is 860 kilocalories per hour.

But any theoretical calculations do not always give an accurate result, since a lot depends on the circumstances.

For example, if the building has very high ceilings, the use of infrared heaters is recommended, they do not heat the air, but the surface of objects, the heat from which is transferred to the air.

To correctly select a heat gun, you need to know how to heat the air flow with this technique.

Guns are divided into several types: electric, diesel and gas guns.

Each type has its own characteristics and advantages.

Electric heat guns

If it is possible to connect to electricity, you can install electric heat guns.

The so-called fan heaters are popular today in everyday life and construction.

Such guns are mobile, easy to operate, do not require additional fuel, and operate from the mains.

Models up to 5 kW. powered by 220 volts, more powerful from 380 volts.

Heat is generated when current passes through a high resistance conductor, the fan blows off the heat from the heating element and carries it to its destination.

Currently, most heat guns use heating elements - heaters in which a wire is placed inside the tube, the tube itself is made of austenitic or non-austenitic steel.

Tubes made of non-austenitic steel heat up less, are more durable, but carry less heat load per unit area. For stronger heating, it is necessary to use longer heating elements.

Tubes made of austenitic steel oxidize during operation, microcracks appear, this can lead to a risk of heating element explosion.

Electric guns are relatively small in size, take up little space, but their performance is not very high, they are not suitable for heating rooms with high humidity (baths, saunas, etc.).

Electric guns consume a lot of electricity, so these models are used in short-term operation.

Gas heat guns

Such models weigh a little and are inexpensive.

Power is usually in the range from 10 to 100 kW, but more powerful ones are also found.

The only problem is fuel, liquefied gas in cylinders is not sold everywhere, it is difficult to make a supply of fuel, since a number of requirements apply to the storage of gas in cylinders.

Gas guns are economical, when burned, gas practically does not emit harmful substances, but ventilation is still necessary.

The consumer must be aware that the gas pressure in the line or in the cylinder must correspond to the selected model of the heater.

For the simplest model with a power of 10 kW, a pressure of 0.5 bar is required, the more powerful the gun, the greater the pressure.

For safety reasons, many guns are provided with flame control and protection against overheating of the body.

Gas guns are sensitive to low temperatures, and in severe frosts they can work unstably.

Diesel heat guns

Diesel guns are similar in principle to gas guns, they use diesel fuel as fuel.

It has a number of disadvantages, namely: a rather high weight, since the gun has to be transported along with the tank.

The design of diesel guns is more complicated.

Fuel is supplied to the combustion chamber by a fuel pump or compressor - all this leads to an increase in cost, and additional components require additional maintenance.

Diesel fuel is more contaminated with impurities than gas, so such guns can be turned on in non-residential premises with ventilation.

But the advantages of such guns are decent.

Fuel is available, its consumption is very economical, one refueling is enough for continuous operation for 10-15 hours.

Transportation of diesel fuel is safe, the heating installation is not tied to the gas pipeline, the power is the same as that of gas guns.

The diesel gun can operate in a wide thermal range.

Some models belong to indirect heating devices; for this, an additional circuit is used in the guns - a heat exchanger.

Hot gases pass through the heat exchanger and go outside through the chimney, the heat is removed by a fan.

The efficiency of such guns is lower, the price is higher, but there is no need to worry about ventilation and ventilation.

Such models are designed for heating large volumes in working rooms.

It must be understood that the operation of diesel and gas heat guns still requires a small amount of electricity to power the fan and the automation system, but if necessary, the gun can be powered from a small generator.

From this article, you can find out what features a diesel heat gun used to quickly heat rooms has: the structure and types of structures, their scope and specificity of the operation process, average prices for popular models. The text provides an overview of the advantages and disadvantages inherent in these devices, descriptions of common types of failures and ways to eliminate them.

With the arrival of the cold season, the problem of heating the premises arises. And this applies not only to living rooms, but also to industrial, warehouse and commercial spaces. If the building does not have a centralized heating system, the lack of heat is compensated by using alternative heating devices. As such a replacement, you can buy an indirect diesel heat gun with suitable characteristics.

The device and principle of operation of a diesel heat gun

The heat gun is a universal device for space heating. The principle of operation of such structures is quite simple: diesel burns inside the heater, as a result of which heat is generated, which is supplied to the room by a powerful fan.

Diesel fuel is used as fuel. Some models are able to run on used and filtered oil or kerosene. Due to the progressive internal design, these designs have high power and efficiency, which reaches almost 100%. All diesel heat guns are dependent on electricity. Some low-power models can operate on 12V or 24V, but most models require 220V to function properly.

Electricity is used to start the burner. In addition, it is necessary for the transport of heat due to the rotational movements of the fan. The burner not only atomizes the fuel, but also contributes to the air supply. As a result of this process, a mixture is formed that is highly flammable. Thanks to this, the flame is stable.

The affordable price of diesel guns and the possibility of efficient heating of rooms devoid of a central heating system have made these designs so popular. This type of equipment is capable of generating a large amount of heat, due to which the scope of its application has expanded.

Important! Solar powered guns cannot be used to heat residential areas.

Scope of diesel structures:

• heating of warehouse type premises;
• backup heating at poorly insulated facilities in cases where frosts uncharacteristic for the area occur;
• heating of construction sites where heating has not yet been installed;
• organization of heating in hangars used for storage of equipment;
• installation of stretch ceilings;
• heating of greenhouse structures used for growing crops.

In addition, you can buy an indirect heating diesel gun to organize heating in the garage.

Why is it profitable to buy a diesel gun: design advantages

Guns that heat rooms by burning diesel fuel have many undeniable advantages. They are compact in size and light in weight, while they have excellent technical characteristics. These designs are easy to use. The mechanism is launched with just one push of a button.
The user has the ability to control the temperature in the room.

Many diesel designs have a built-in system for connecting a rheostat. The principle of operation of this mechanism is very simple. Before launching the gun, it is enough just to set the required parameter. When the room temperature reaches this value, the equipment will automatically turn off. When the temperature drops below the level of the specified mark, the structure will start on its own.

Diesel guns are economical, fuel consumption depends on the technical parameters of the device. Equipment with a power of 20 kW and a capacity of 550 m³ / h will need about 1.5 liters of diesel fuel to warm up this volume. Using such a gun, you can achieve quick results. According to the information declared by the manufacturers, diesel devices instantly warm up the room. The air temperature of +10°C in a room with a volume of 120 m³ can be raised by a gun to a level of +180°C in 15 minutes. And this speed is not the limit.

Diesel devices are safe to operate. If the room is well ventilated, the inhalation of burnt air does not cause such unpleasant consequences as headaches and dizziness. High-quality designs are able to work for a long time without additional refueling. The guns are equipped with tanks of large volumes, thanks to which they are able to work continuously throughout the day.

Note! The body of the structure is heated to a temperature of + 30-35 ° C maximum. Therefore, accidentally touching the gun will not cause burns.

Disadvantages of using diesel heat guns for a garage

The customer reviews left about diesel heat guns for the garage not only reflect the advantages of these designs. Sometimes they also have shortcomings that were identified by users during the operation of the device.

High noise levels are often cited as a serious hearing irritant. Although the presence of sounds is considered normal for heating equipment. Guns do not belong to the category of silent devices. Some manufacturers offer models with reduced operating noise levels. For example, the Master BLP 15M diesel heat gun produces no more than 20 dB. This figure is considered very low.

Many users find the dependence of appliances on the electrical network inconvenient. The gun does need power for the fan and pump, and there is no way around these requirements. However, most often such structures are used at facilities where there is electrical wiring.

Among the disadvantages, the high price of diesel heat guns is also mentioned. However, it should be noted that the cost of such devices is fully justified by their reliability and comfortable operating system. Many are concerned about the cost of diesel fuel, the purchase of which is more expensive than the purchase of liquefied gas in bottles. Although the fuel consumption of these devices is small.

How to choose a heat gun according to technical parameters

One of the most important technical parameters of any heat gun is the level of its performance. In the characteristics, manufacturers indicate the number of kilowatts that the gun is capable of delivering in intensive operation. You can also calculate the performance level yourself.

An average power of 1 kW is enough to heat an area of ​​10 m², provided that the ceiling height does not exceed 3 m. This indicator is conditional, since it depends on the operating conditions of the room that needs heating.

Factors that affect heating efficiency:

• wall thickness;
• availability and quality of insulation;
• condition of the ventilation system;
• heat leakage (frequency of opening gates or doors);
• the number of windows and doorways, their size;
• outdoor air temperature;
• the condition of the floors;
• wind strength, etc.

The price of an indirect diesel heat gun is not an indicator of quality. When choosing a device, it is advisable to pay attention to powerful modifications. The higher this figure, the better. If there is a lot of heat, you can always reduce the intensity of work. And if there is a shortage of heating, you will have to buy another device, which will significantly affect the budget. The efficiency of a diesel heater is also influenced by the place of its installation.

Useful advice! In large rooms, it is desirable to use several heaters. Arranging appliances diagonally will be more effective than placing them along a wall.

Cold air is always heavier than warm air, so it always accumulates in the lower part of the room. Based on this, it becomes clear that installing the gun on a hill or turning its working edge up does not increase the heating efficiency. The most optimal position of the equipment is horizontal.

The performance of thermal ventilation equipment is another parameter that you should pay attention to. For an indirect heating diesel gun Ballu BHDN-20, this figure is 500 m³ / h. This means that the device is able to effectively heat the specified volume of air within 1 hour.

Last but not least are the dimensions and weight of the structures. The mass of heat guns can vary between 3-30 kg. Most of them have a mobile design, so they are easy to use. The smaller the device, the easier it is to move.

Features of direct heating diesel heat guns

Direct heating guns are the simplest devices that can serve as heat sources. Such designs have an open combustion chamber. A pump equipped with a nozzle is installed inside, due to which a torch effect is provided. Behind these elements is a fan. All the heat that is generated in the process of fuel processing is supplied to the room along with the products of its combustion.

1. Diesel fuel from the tank is fed into the heating filter.
2. The compressor transports fuel to the injector.
3. The diesel fuel is ignited by the glow plug.
4. A fan mounted behind the burner draws cold air from the room into the combustion chamber where it is heated.
5. The protective grid located in the front of the device delays the flame, preventing it from penetrating outside the combustion chamber housing.
6. After heating, the air is fed back into the room.

Related article:

Construction and principle of operation. Varieties of thermal curtains. Installation and repair of the device. well-known manufacturers.

The principle of operation of a direct heating gun is quite simple. It is efficient and understandable. However, such guns have one significant drawback. All combustion products enter the room, so it is not recommended to use devices in living rooms. Direct heated guns are suitable for open areas and spaces with a good ventilation system.

Average prices of diesel guns for space heating (direct heating designs):

Brand	Model	Power level, kW	price, rub.
Resanta	TDP-20000	20	11890
	TDP-30000	30	13090
Ballu	BHDP-10	10	13590
	BHDP-20	20	14430
	BHDP-30	30	17759
Master	B 35 CEL DIY	10	21590
	B35 CED	10	21790
	B70 CED	20	31260

Note! Using fuel with impurities will lead to injector contamination and other unpleasant consequences. Therefore, it is very important to use quality raw materials in order to avoid expensive repairs and purchase of spare parts for a diesel gun.

Consumer opinions about diesel heat guns: reviews of direct heating designs

Users of heating equipment often share their own opinions on forums. Some of the reviews can be found below:

“I have long heard about the advantages of Master diesel heat guns, so when it became necessary to purchase a heater, I did not think for a long time and made a bet on this particular manufacturer. The gun works perfectly and fully justifies the money spent on its purchase. With its help, I not only heat the garage, but also take this device with me to the dacha for the workshop.

Of course, it’s a pity that you can’t work in a room where the gun is turned on, but I don’t really need this. It takes no more than 20 minutes to warm up the room. Other than that, I'm completely satisfied with my purchase."

Sergey Kostyuk, Yekaterinburg

“I bought myself a BALLU BHDP-20 diesel heat gun. Excellent unit. For a month of operation, no failures in automation, as was the case with my previous gun. I like that the design provides for the ability to adjust the pressure on the compressor that the diesel supplies. There is only one minus - with a full tank, the device is slightly heavy.

Igor Samoilov, Moscow

“To heat the garage, a neighbor advised me to purchase a heat gun. I went through the manufacturers and models for a long time. In the end, I settled on the Master B 35 CED diesel gun. Great machine, very simple. It is economical and completely unpretentious in maintenance. I've been using it for over a year now. One filling is enough to keep the gun running all day. A 5x8 m garage warms up in 15 minutes.

Georgy Miroshnichenko, St. Petersburg

Features of indirect heating diesel heat guns for the garage, prices and reviews

This type of gun functions in much the same way as direct fired designs. The only difference is that the products of combustion, which are formed in the process of fuel exhaustion, are removed outside the room. For this, a chimney is used. Thanks to this, indirect heating guns can be used in almost any room with a sufficient level of ventilation.

A nozzle is installed in the design of the closed combustion chamber. In addition, the gun has a system designed to remove combustion products. The air blown by the fan does not come into contact with the torch. Its heating is provided by blowing the combustion chamber.

Average prices for diesel heat guns of indirect heating:

Brand	Model	Power level, kW	price, rub.
Profteplo	DK-21N	21	29930
	DK-21R	21	32250
	DK-21N-R	21	44920
Kroll	MAC 15	15	34350
	MAC 25	26	41180
	MAC 40	38,5	44500
Aurora	TK-55ID	17,5	37400
	TK-80K ID	25	43400
	TK-240K ID	70	70200

Useful advice! You can determine the thermal output of a room heating device using this formula: Q (in kcal / h) = K × V × ΔT, where Q is the required level of thermal output, K is a coefficient reflecting the degree of heat dissipation, V is the total volume of the room, and ΔT is the difference between the outdoor temperature and that required to create a comfortable indoor microclimate.

The choice of heat guns can be carried out both for domestic conditions: heating a house, garage, greenhouse, and for construction needs (when it is necessary to dry the room after finishing). In any case, in order to choose this type of electric heater correctly, it is necessary to determine its power, manufacturer and design features. Next, we will tell readers "" how to choose an electric heat gun and what parameters you need to pay attention to when buying.

Specifications

The first thing you should start from is what parameters are suitable for the normal operation of an electric heat gun. The choice must be made according to power and suitable voltage.

As for the first characteristic, there are two calculation options. A simpler method of determining is that for heating 10 sq.m. rooms need at least 1 kW of power. In total, if you have a room of 4 * 6 meters (for example, a garage), simple calculations will show that you need to choose the power of an electric heat gun, not less than 3 kW. We determined it as follows: 4 * 6 will be 24 sq.m., taking into account the recommendations that the power reserve should be at least 20%, we have: 2.4 * 1.2 \u003d 2.88 kilowatts. The closest value is 3 kW, which you need to choose for heating the garage.

The second calculation method is more accurate, and we recommend using it when choosing an electric heat gun for your home. In this case, the formula does not take into account the area of ​​​​the room, but its volume and the coefficient of thermal conductivity of the walls. As a result, the formula looks like:

P= (V*dT*Kt)/860 ,

• V is the volume of the room, calculated as the area multiplied by the height of the ceiling, m3;
• dT is the temperature difference between the environment and indoors;
• Kt is the thermal conductivity coefficient. For walls with high-quality thermal insulation from 0.6 to 1. Medium thermal insulation or brick laying in two rows - from 1 to 2. Single-row brick laying, poor thermal insulation - from 2 to 3. Dilapidated hangars from profiled sheet or boards - a coefficient from 3 to 4$
• 860 - the number of kcal in 1 kW.

Power marking - 9 kW

In order for you to understand the whole essence of the calculation, again consider it with an example. You have decided to choose an electric heat gun for the garage, or rather, for heating the car. The volume of the room is the same 4 * 6 meters * 3 (ceiling height). The temperature inside the building should be +15 o C, outside now -20 o C. In total, the difference is 35 degrees. The garage is well insulated, so we take the coefficient 1. As a result, the calculation formula will look like: 72 * 35 * 1 \u003d 2520 kcal / hour. To convert the value to kW, you need to divide it by 860. The result is 2520/860 = 2.93 kW. Taking into account the margin, it is necessary to select a heat gun of at least 3.5 kW, which will be quite enough.

We immediately draw your attention to the fact that there is a conditional classification of devices by power. It is believed that up to 5 kW these are fan heaters, and already above - guns. with reviews of the most popular models we considered in the corresponding article!

The second, no less important technical characteristic is the operating voltage. There are electric heaters with a power of over 20 kW, which, of course, require a three-phase 380 V network to operate. You should also take this point into account if you decide to choose an electric heat gun for heating a garage or a summer house, to a new, more powerful one. Devices with a power of up to 7 kW can be connected to a single-phase 220 V network, if the wire section allows. It is best to do before connecting to make sure your wiring can handle these current loads.

Well, the last thing you need to pay attention to when choosing a heat gun is the duration of work. As you understand, when heating a room with a cannon, it must work without interruption for a long time. That is why device manufacturers indicate the value “24/1” or “24/2” on the case, which respectively means round-the-clock work with a break of 1-2 hours.

In addition, in order to choose the right electric heat gun according to its characteristics, pay attention to the noise level of its operation and the operating temperature range. Modern devices must operate at temperatures not less than +5 o C to +40 o C.

Video review of heaters for home and construction

Room type

The next, no less important criterion for choosing an electric heat gun is depending on the type of room. For example, for a house, you need to buy indirect heating devices, the design of which includes an exhaust gas system. This is due to the fact that in a private house there are people and animals that can be negatively affected by exhaust gases. Although this point is not relevant in relation to the electric heater, you should still be aware of the importance of indirect heating. If you want to choose a heat gun for a greenhouse or for heating a car, it is better not to overpay and buy a simpler version of the design.

Another important nuance should be noted right away - if you want to choose an electric heat gun for temporary heating, buy a portable case. If the heater has to work for a long time in one place, for example, in the country, choose a stationary type device that needs to be fixed in a certain place in the room.

Extra options

We figured out which electric heat gun is better to choose in terms of power and depending on the type of room. But that's not all you need to know about this issue. When choosing a heater, it is very important to pay attention to the following points:

The device of the unit includes a metal case, which is able to protect the structure from various damages. Heating parts are fireproof. All models are lightweight, which allows them to be moved anywhere.

Diesel structures are often in demand in the construction of various facilities. They are used when necessary to quickly dry the surface. Liquid-fueled designs are of indirect and direct heating. In the first method, flue gases are removed from the room. The operation of such devices is accompanied by the burnout of oxygen, so they are used outdoors or in rooms with flow ventilation.

How to choose a diesel heat gun?

Keep in mind that when starting a heat gun on diesel fuel, combustion products are emitted. Manufacturers offer two types of such devices: direct heating and indirect heating.

When choosing a design, the following factors are important:

• area of ​​the room;
• availability of fuel raw materials;
• the ability to remove harmful impurities, and ventilation;
• how it will be operated: permanently or periodically.

Diesel units contain a burner, combustion chambers, a fuel tank and a fan. Some products are equipped with wheels for ease of movement. Fuel is supplied by a pump.

Useful information! When choosing a model, in the calculations, rely on the following indicators. For 10 sq. m. will need about 0.9-1.5 kW.

The nuances of choosing a direct heating diesel heat gun

The diesel fuel heat gun has a simple direct heating mechanism. Inside the product there is an electric motor and a fan. With the use of a pumping unit, fuel is delivered to the furnace tank. The burner is mounted inside the body, so there is no open flame.

When burned out, the diesel fuel warms up the air masses, which are removed from the fan. Heated air is distributed in space. And the smoke masses diverge into the inside of the building. Therefore, such devices can be used outdoors or in buildings with a good ventilation system.

Note! Such models are suitable for short-term work. For example, dry the work surface during construction work or warm up a frozen engine.

How to choose an indirect diesel heat gun?

In indirect heating installations, in addition to the main elements, there is also a heat exchanger. The fuel moves from a special tank to the furnace tank. At the same time, the flue gases do not mix with the air masses from the fan, but exit through the chimney structure to the street.

When the device is turned on, the heat exchanger warms up and heats the air. At the outlet, such devices can emit from 50 to 110 degrees of heat. This technique is used in factories and warehouses, since harmful gases do not pass inside. In modern equipment, furnace tanks are made of stainless steel.

Some devices are equipped with flexible hoses that allow you to release a warm stream to a specific area.

Useful information! A thermostat can be connected to the equipment, which is mounted inside the building. At the same time, the equipment will be able to maintain the required temperature and will produce heat for about 17 hours.

Models of infrared diesel heat guns

The installation of an infrared diesel heat gun does not include a fan heater. Such heaters do not heat the atmosphere, but the surrounding objects with the help of infrared radiation.

The burner with diesel raw materials warms up the infrared emitter, which heats up the surfaces and objects in the room. silent, as their device does without a fan.

Model overview

To decide which heat gun is better gas or diesel, a review of the prices of individual models will help.

Image	Models	price, rub.
	Ballu BHDP-10	13900
	Hyundai H-HD2-20-UI586	16600
	Master B 35 CED	18100
	RESANTA TDP-20000, 20kW red	13500
	QUATTRO ELEMENTI QE-22D 243-905	14300
	Kerona P-3000E-T	24200

Such heating equipment is produced by the following companies:

• Master is one of the popular brands. The company has been operating in this area for over 40 years. At the same time, not only diesel models are offered, but also gas and electric ones. The products of this manufacturer have proven themselves to be reliable, safe and affordable;
• Ballu's models are mainly used for large factories and warehouses. The equipment is known for functionality, good performance and pleasing design;
• in the arsenal of Kerona there are models of both economy class and luxury class. All models run on kerosene or diesel fuel.

How to calculate the power of the equipment?

An important factor influencing the preference for a particular product is power. This figure is in the range from 20 to 220 kW. To calculate the unit with what power you need, you need to calculate the volume of the room. For this, the height, width and length of the walls are determined. You should also know the quality of the thermal insulation. This coefficient will differ for non-insulated brick and wooden buildings, as well as for buildings with increased thermal insulation. To carry out calculations, it is worth determining the difference in temperature values ​​​​inside and outside the building. In this case, the power of the device is calculated as follows, the volume of the room is multiplied by the temperature difference and the thermal insulation coefficient.

Models of heat guns on waste oil will be an excellent solution for heating any room.

What to choose for garage heating (video)

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